A metal-tellurene-metal terahertz photodetector， and realized optical detection under millimeter wave-terahertz wave are fabricated. The results show that the terahertz photodetector based on logarithmic antenna tellurene has a high optical responsivity （40 mA/W， 0.12 THz） under zero bias， a response time of 8 μs， and a noise equivalent power （NEP） of 4 pW·Hz^-0.5. This research results provide a new development path for high-performance room temperature terahertz optical detection.